Finally I found a solution, the only way that worked for my friends and me was to use the r41 version of T4M, this allows you to change the nickname of the %appdata% folder and does not change it.

Could you please help me out i've also tried the same with friends but it keeps getting infinte loading when launching the map.
I'm using the Latest version of the crack of Cod world at war (Dodi Repack) and T4m R45 + the R41 Fixed
Also changed the profile and indeed the R41 version doesn't change the profile but we still can't join get into a fully working lobby only the lobby.